code: public final Field getField(FieldName name) {
  
      GetFieldRequest request =
          GetFieldRequest.newBuilder().setName(name == null ? null : name.toString()).build();
      return getField(request);
    }
docs: Gets the metadata and configuration for a Field.
  
  <p>Sample code:
  
  <pre><code>
  try (FirestoreAdminClient firestoreAdminClient = FirestoreAdminClient.create()) {
  FieldName name = FieldName.of("[PROJECT]", "[DATABASE]", "[COLLECTION_ID]", "[FIELD_ID]");
  Field response = firestoreAdminClient.getField(name);
  }
  </code></pre>
  
  @param name A name of the form
  `projects/{project_id}/databases/{database_id}/collectionGroups/{collection_id}/fields/{field_id}`
  @throws com.google.api.gax.rpc.ApiException if the remote call fails