docs: protected VertexElement addTypeVertex(LabelId id, Label label, Schema.BaseType baseType) {
          VertexElement vertexElement = addVertexElement(baseType);
          vertexElement.property(Schema.VertexProperty.SCHEMA_LABEL, label.getValue());
          vertexElement.property(Schema.VertexProperty.LABEL_ID, id.getValue());
          return vertexElement;
      }