function getEntityData(oContext) {
			var oEntity = _Helper.merge({}, that._getObject(oContext.getPath()));

			delete oEntity.__metadata;

			return oEntity;
		}
Adds the sub-entities contained in the given root context to the given request payload
object.

@param {sap.ui.model.odata.v2.Context} oRootContext
  The root context which may have sub-entities
@param {object} oPayload
  The object representing the root context in the payload for the creation POST request

@private