Ggit.Submodule.get_index_id

### Method

# Ggit Submoduleget_index_id

#### Declaration [src]

    GgitOId*
    ggit_submodule_get_index_id (
      GgitSubmodule* submodule
    )

#### Description [src]

Gets the OID for the submodule in the index or `NULL` if there is no index.

#### Return value

Returns: | `GgitOId`
| The OID for the submodule in the index or `NULL`.
| The caller of the method takes ownership of the data, and is responsible for freeing it.
| The return value can be `NULL`.