Missing default deadlines in generated stubs #1477

from google.cloud.bigtable_admin_v2 import BigtableTableAdminClient
from google.cloud.bigtable_admin_v2.types import ModifyColumnFamiliesRequest, ColumnFamily,GcRule

c = BigtableTableAdminClient()
c.modify_column_families(
    ModifyColumnFamiliesRequest(
        name="projects/my-project/instances/my-instance/tables/my-table",
        modifications=[
            ModifyColumnFamiliesRequest.Modification(
                id="family",
                create=ColumnFamily(
                    gc_rule=GcRule(
                        max_num_versions=1
                    )
                )
            )
        ]
    )
)

   if specified_timeout is DEFAULT:
        specified_timeout = default_timeout