| AnnotatedNode | 
 Base class for any AST node which is capable of being annotated 
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| AnnotationNode | 
 Represents an annotation which can be attached to interfaces, classes, methods, fields, parameters, and other places. 
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| ASTNode | 
 Base class for any AST node. 
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| AstToTextHelper | 
 Helper class for converting AST into text. 
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| ClassCodeExpressionTransformer | 
 Transforms expressions in a whole class. 
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| ClassCodeVisitorSupport | 
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| ClassHelper | 
Helper for  ClassNode and classes handling them.  
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| ClassNode | 
 Represents a class in the AST. 
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| CodeVisitorSupport | 
 Abstract base class for any GroovyCodeVisitor which by default
 just walks the code and expression tree 
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| CompileUnit | 
Represents the entire contents of a compilation step which consists of one or more
  ModuleNode instances.  
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| CompileUnit.ConstructedOuterNestedClassNode | 
 Represents a resolved type as a placeholder. 
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| ConstructorNode | 
 Represents a constructor declaration 
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| DynamicVariable | 
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| EnumConstantClassNode | 
 Represents the anonymous inner class for an enum constant
 This subtype is needed so that EnumVisitor can differentiate between the scenarios when a InnerClassNode
 represents anonymous inner class for an enu constant and when it represents an enum class defined inside
 another class 
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| FieldNode | 
 Represents a field (member variable) 
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| GenericsType | 
 This class is used to describe generic type signatures for ClassNodes. 
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| GenericsType.GenericsTypeName | 
 Represents GenericsType name
 TODO In order to distinguish GenericsType with same name(See GROOVY-8409), we should add a property to keep the declaring class. 
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| ImportNode | 
 Represents an import statement of a single class 
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| InnerClassNode | 
 Represents an inner class declaration 
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| InterfaceHelperClassNode | 
 Represents an inner class defined as helper for an interface 
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| MethodCallTransformation | 
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| MethodInvocationTrap | 
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| MethodNode | 
 Represents a method declaration. 
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| MixinASTTransformation | 
Deprecated.
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| MixinNode | 
 Represents a mixin which can be applied to any ClassNode to implement mixins 
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| ModifierNode | 
 Represents a modifier 
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| ModuleNode | 
 Represents a module, which consists typically of a class declaration
 but could include some imports, some statements and multiple classes
 intermixed with statements like scripts in Python or Ruby 
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| PackageNode | 
 Represents a package in the AST. 
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| Parameter | 
 Represents a parameter on a constructor or method call. 
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| PropertyNode | 
 Represents a property (member variable, a getter and setter) 
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| TransformingCodeVisitor | 
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| VariableScope | 
 Records declared and referenced variabes for a given scope. 
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