@MigrateCommand.option('<STR_LIT>', dest='<STR_LIT>',<EOL>action='<STR_LIT:store_true>', default=False,<EOL>help='<STR_LIT>')<EOL>@MigrateCommand.option('<STR_LIT>', '<STR_LIT>', dest='<STR_LIT>', action='<STR_LIT:store_true>',<EOL>default=False, help='<STR_LIT>')<EOL>@MigrateCommand.option('<STR_LIT>', '<STR_LIT>', dest='<STR_LIT>', default=None,<EOL>help=("<STR_LIT>"<EOL>"<STR_LIT>"))<EOL>@catch_errors<EOL>def heads(directory=None, verbose=False, resolve_dependencies=False):
if alembic_version >= (<NUM_LIT:0>, <NUM_LIT:7>, <NUM_LIT:0>):<EOL><INDENT>config = current_app.extensions['<STR_LIT>'].migrate.get_config(<EOL>directory)<EOL>command.heads(config, verbose=verbose,<EOL>resolve_dependencies=resolve_dependencies)<EOL><DEDENT>else:<EOL><INDENT>raise RuntimeError('<STR_LIT>')<EOL><DEDENT>
Show current available heads in the script directory