| Class | Description | 
                            | ASTNode | Base class for any AST node. | 
                            | AnnotatedNode | Base class for any AST node which is capable of being annotated | 
                            | AnnotationNode | Represents an annotation which can be attached to interfaces, classes, methods, fields, parameters, and other places. | 
                            | AstToTextHelper | Helper class for converting AST into text. | 
                            | ClassCodeExpressionTransformer | Transforms expressions in a whole class. | 
                            | ClassCodeVisitorSupport |  | 
                            | ClassHelper | Helper for ClassNode and classes handling them. | 
                            | ClassNode | Represents a class in the AST. | 
                            | CodeVisitorSupport | Abstract base class for any GroovyCodeVisitor which by default
 just walks the code and expression tree | 
                            | CompileUnit | Represents the entire contents of a compilation step which consists of one or more
 ModuleNode instances. | 
                            | CompileUnit.ConstructedOuterNestedClassNode | Represents a resolved type as a placeholder. | 
                            | ConstructorNode | Represents a constructor declaration | 
                            | DynamicVariable |  | 
                            | 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 | 
                            | FieldNode | Represents a field (member variable) | 
                            | GenericsType | This class is used to describe generic type signatures for ClassNodes. | 
                            | GenericsType.GenericsTypeName |  | 
                            | ImportNode | Represents an import statement. | 
                            | InnerClassNode | Represents an inner class declaration | 
                            | InterfaceHelperClassNode | Represents an inner class defined as helper for an interface | 
                            | MethodCallTransformation |  | 
                            | MethodInvocationTrap |  | 
                            | MethodNode | Represents a method declaration. | 
                            | MixinASTTransformation | deprecated:static mixins have been deprecated in favour of traits (trait keyword).
 | 
                            | MixinNode | Represents a mixin which can be applied to any ClassNode to implement mixins | 
                            | ModifierNode | Represents a modifier | 
                            | 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 | 
                            | PackageNode | Represents a package in the AST. | 
                            | Parameter | Represents a parameter on a constructor or method call. | 
                            | PropertyNode | Represents a property (member variable, a getter and setter) | 
                            | TransformingCodeVisitor |  | 
                            | VariableScope | Records declared and referenced variabes for a given scope. |