clang API Documentation
objc-class-instance-variables: '{' objc-instance-variable-decl-list[opt] '}'
objc-instance-variable-decl-list: objc-visibility-spec objc-instance-variable-decl ';' ';' objc-instance-variable-decl-list objc-visibility-spec objc-instance-variable-decl-list objc-instance-variable-decl ';' objc-instance-variable-decl-list ';'
objc-visibility-spec:
]
objc-instance-variable-decl: struct-declaration