private com.google.protobuf.RepeatedFieldBuilderV3< com.google.firestore.v1beta1.Document, com.google.firestore.v1beta1.Document.Builder, com.google.firestore.v1beta1.DocumentOrBuilder> getDocumentsFieldBuilder() { if (documentsBuilder_ == null) { documentsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3< com.google.firestore.v1beta1.Document, com.google.firestore.v1beta1.Document.Builder, com.google.firestore.v1beta1.DocumentOrBuilder>( documents_, ((bitField0_ & 0x00000001) == 0x00000001), getParentForChildren(), isClean()); documents_ = null; } return documentsBuilder_; }