def write_directory(self, directory: str) -> bool:
current_md5_hash = self.get_namespace_hash()<EOL>md5_hash_path = os.path.join(directory, f'<STR_LIT>')<EOL>if not os.path.exists(md5_hash_path):<EOL><INDENT>old_md5_hash = None<EOL><DEDENT>else:<EOL><INDENT>with open(md5_hash_path) as file:<EOL><INDENT>old_md5_hash = file.read().strip()<EOL><DEDENT><DEDENT>if old_md5_hash == current_md5_hash:<EOL><INDENT>return False<EOL><DEDENT>with open(os.path.join(directory, f'<STR_LIT>'), '<STR_LIT:w>') as file:<EOL><INDENT>self.write_bel_namespace(file, use_names=False)<EOL><DEDENT>with open(md5_hash_path, '<STR_LIT:w>') as file:<EOL><INDENT>print(current_md5_hash, file=file)<EOL><DEDENT>if self.has_names:<EOL><INDENT>with open(os.path.join(directory, f'<STR_LIT>'), '<STR_LIT:w>') as file:<EOL><INDENT>self.write_bel_namespace(file, use_names=True)<EOL><DEDENT>with open(os.path.join(directory, f'<STR_LIT>'), '<STR_LIT:w>') as file:<EOL><INDENT>self.write_bel_namespace_mappings(file, desc='<STR_LIT>')<EOL><DEDENT><DEDENT>return True<EOL>
Write a BEL namespace for identifiers, names, name hash, and mappings to the given directory.