Get a TypeRef pointing to a structure type named *name*.
        NameError is raised if the struct type isn't found.

def get_struct_type(self, name):
        """
        Get a TypeRef pointing to a structure type named *name*.
        NameError is raised if the struct type isn't found.
        """
        p = ffi.lib.LLVMPY_GetNamedStructType(self, _encode_string(name))
        if not p:
            raise NameError(name)
        return TypeRef(p)