/// <summary>
        /// Initializes a new instance of the <see cref="CSharpAttachmentInstruction"/> class.
        /// </summary>
        /// <param name="context">The creation context.</param>
        /// <param name="parentFeature">The parent feature.</param>
        /// <param name="source">The Easly instruction from which the C# instruction is created.</param>
        protected CSharpAttachmentInstruction(ICSharpContext context, ICSharpFeature parentFeature, IAttachmentInstruction source)
            : base(context, parentFeature, source)
        {
            SourceExpression = CSharpExpression.Create(context, (IExpression)source.Source);

            IResultType ResolvedResult = SourceExpression.Source.ResolvedResult.Item;

            for (int i = 0; i < source.EntityNameList.Count; i++)
            {
                IName EntityName = source.EntityNameList[i];

                string ValidName = EntityName.ValidText.Item;
                EntityNameList.Add(new CSharpVariableContext(ValidName));
            }

            foreach (IAttachment Attachment in source.AttachmentList)
            {
                ICSharpAttachment NewAttachment = CSharpAttachment.Create(context, this, Attachment);
                AttachmentList.Add(NewAttachment);
            }

            if (source.ElseInstructions.IsAssigned)
            {
                ElseInstructions = CSharpScope.Create(context, parentFeature, (IScope)source.ElseInstructions.Item);
            }
        }
 /// <summary>
 /// Creates an attribute specification.
 /// </summary>
 /// <param name="attribute">the attribute</param>
 /// <param name="entities">the list of entity names</param>
 /// <param name="entityClass">the class of the entities</param>
 /// <param name="value">the value</param>
 public AttributeSpecification(Attribute attribute, EntityNameList entities, EntityClass entityClass, Expression @value)
 {
     this.attribute   = attribute;
     this.entities    = entities;
     this.entityClass = entityClass;
     this.value       = @value;
 }