public virtual void TestMultiPoint()
		{
			com.esri.core.geometry.MultiPoint mp = new com.esri.core.geometry.MultiPoint();
			mp.Add(new com.esri.core.geometry.Point(100, 200));
			mp.Add(new com.esri.core.geometry.Point(101, 201));
			mp.Add(new com.esri.core.geometry.Point(102, 202));
			NUnit.Framework.Assert.IsFalse(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.M));
			mp.AddAttribute(com.esri.core.geometry.VertexDescription.Semantics.M);
			NUnit.Framework.Assert.IsTrue(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.M));
			NUnit.Framework.Assert.IsTrue(double.IsNaN(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 0, 0)));
			NUnit.Framework.Assert.IsTrue(double.IsNaN(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 1, 0)));
			NUnit.Framework.Assert.IsTrue(double.IsNaN(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 2, 0)));
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.M, 0, 0, 1);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.M, 1, 0, 2);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.M, 2, 0, 3);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 0, 0) == 1);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 1, 0) == 2);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 2, 0) == 3);
			NUnit.Framework.Assert.IsFalse(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.Z));
			mp.AddAttribute(com.esri.core.geometry.VertexDescription.Semantics.Z);
			NUnit.Framework.Assert.IsTrue(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.Z));
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0) == 0);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0, 11);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0, 21);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0, 31);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 0, 0) == 1);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 1, 0) == 2);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 2, 0) == 3);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0) == 11);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0) == 21);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0) == 31);
			NUnit.Framework.Assert.IsFalse(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.ID));
			mp.AddAttribute(com.esri.core.geometry.VertexDescription.Semantics.ID);
			NUnit.Framework.Assert.IsTrue(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.ID));
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 0, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 1, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 2, 0) == 0);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.ID, 0, 0, -11);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.ID, 1, 0, -21);
			mp.SetAttribute(com.esri.core.geometry.VertexDescription.Semantics.ID, 2, 0, -31);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 0, 0) == 1);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 1, 0) == 2);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 2, 0) == 3);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0) == 11);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0) == 21);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0) == 31);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 0, 0) == -11);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 1, 0) == -21);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 2, 0) == -31);
			mp.DropAttribute(com.esri.core.geometry.VertexDescription.Semantics.M);
			NUnit.Framework.Assert.IsFalse(mp.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.M));
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0) == 11);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0) == 21);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0) == 31);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 0, 0) == -11);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 1, 0) == -21);
			NUnit.Framework.Assert.IsTrue(mp.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 2, 0) == -31);
			com.esri.core.geometry.MultiPoint mp1 = new com.esri.core.geometry.MultiPoint();
			mp.CopyTo(mp1);
			NUnit.Framework.Assert.IsFalse(mp1.HasAttribute(com.esri.core.geometry.VertexDescription.Semantics.M));
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0) == 11);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0) == 21);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0) == 31);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 0, 0) == -11);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 1, 0) == -21);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 2, 0) == -31);
			mp1.DropAllAttributes();
			mp1.MergeVertexDescription(mp.GetDescription());
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 0, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 1, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.Z, 2, 0) == 0);
			NUnit.Framework.Assert.IsTrue(double.IsNaN(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 0, 0)));
			NUnit.Framework.Assert.IsTrue(double.IsNaN(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 1, 0)));
			NUnit.Framework.Assert.IsTrue(double.IsNaN(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.M, 2, 0)));
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 0, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 1, 0) == 0);
			NUnit.Framework.Assert.IsTrue(mp1.GetAttributeAsDbl(com.esri.core.geometry.VertexDescription.Semantics.ID, 2, 0) == 0);
		}