def dump_declarations(declarations, file_path):
with open(file_path, "<STR_LIT>") as f:<EOL><INDENT>print_declarations(declarations, writer=f.write)<EOL><DEDENT>
Dump declarations tree rooted at each of the included nodes to the file

:param declarations: either a single :class:declaration_t object or a list
    of :class:declaration_t objects
:param file_path: path to a file