Implements the IMethodCallTransformer interface for the string.Concat(string, string) overloads.
Calls to those methods are represented as simple Expression.Equal(System.Linq.Expressions.Expression,System.Linq.Expressions.Expression,bool,System.Reflection.MethodInfo) expressions that refer to the string.Concat(string,string) method. Arguments that are not of static type string are converted to the nvarchar data type via SqlConvertExpression.
Inheritance: IMethodCallTransformer
 public void SetUp ()
 {
   _transformer = new ConcatMethodCallTransformer ();
   _twoStringConcatMethod = typeof (string).GetMethod ("Concat", new[] { typeof (string), typeof (string) });
 }