val mk : ?loc:loc -> ?attrs:attrs -> ?docs:Docstrings.docs -> ?params:(Parsetree.core_type * Asttypes.variance) list -> ?priv:Asttypes.private_flag -> lid -> Parsetree.extension_constructor list -> Parsetree.type_extensionval mk_exception : ?loc:loc -> ?attrs:attrs -> ?docs:Docstrings.docs -> Parsetree.extension_constructor -> Parsetree.type_exceptionval constructor : ?loc:loc -> ?attrs:attrs -> ?docs:Docstrings.docs -> ?info:Docstrings.info -> str -> Parsetree.extension_constructor_kind -> Parsetree.extension_constructorval decl : ?loc:loc -> ?attrs:attrs -> ?docs:Docstrings.docs -> ?info:Docstrings.info -> ?args:Parsetree.constructor_arguments -> ?res:Parsetree.core_type -> str -> Parsetree.extension_constructorval rebind : ?loc:loc -> ?attrs:attrs -> ?docs:Docstrings.docs -> ?info:Docstrings.info -> str -> lid -> Parsetree.extension_constructor