StatementTree
sealed abstract
class Export
class Import
class TermTree
class Apply
class Assign
class Block
class Ident
class If
class InlineIf
class InlineMatch
class Inlined
class Lambda
class Literal
class Match
class NamedArg
class New
class Return
class Select
class SeqLiteral
class Super
class This
class Throw
class Try
class TypeApply
class Typed
class While
class TypeDef
class ClassDef
class TypeMember
class TypeParam
class ValOrDefDef
class DefDef
class ValDef