def prefix(self, imod: YangIdentifier, mid: ModuleId) -> YangIdentifier:
        """Return the prefix corresponding to an implemented module.

        Args:
            imod: Name of an implemented module.
            mid: Identifier of the context module.

        Raises:
            ModuleNotImplemented: If `imod` is not implemented.
            ModuleNotRegistered: If `mid` is not registered in YANG library.
            ModuleNotImported: If `imod` is not imported in `mid`.
        """
        try:
            did = (imod, self.implement[imod])
        except KeyError:
            raise ModuleNotImplemented(imod) from None
        try:
            pmap = self.modules[mid].prefix_map
        except KeyError:
            raise ModuleNotRegistered(*mid) from None
        for p in pmap:
            if pmap[p] == did:
                return p
        raise ModuleNotImported(imod, mid)
def prefix ( self , imod : YangIdentifier , mid : ModuleId ) -> YangIdentifier : try : did = ( imod , self . implement [ imod ] ) except KeyError : raise ModuleNotImplemented ( imod ) from None try : pmap = self . modules [ mid ] . prefix_map except KeyError : raise ModuleNotRegistered ( * mid ) from None for p in pmap : if pmap [ p ] == did : return p raise ModuleNotImported ( imod , mid )
Return the prefix corresponding to an implemented module.

        Args:
            imod: Name of an implemented module.
            mid: Identifier of the context module.

        Raises:
            ModuleNotImplemented: If `imod` is not implemented.
            ModuleNotRegistered: If `mid` is not registered in YANG library.
            ModuleNotImported: If `imod` is not imported in `mid`.