private void ensureErrorLogEntriesIsMutable() {
        if (!((bitField0_ & 0x00000004) != 0)) {
          errorLogEntries_ =
              new java.util.ArrayList<
                  com.google.storagetransfer.v1.proto.TransferTypes.ErrorLogEntry>(
                  errorLogEntries_);
          bitField0_ |= 0x00000004;
        }
      }
<pre>
Required. Count of this type of error.
</pre>

<code>int64 error_count = 2 [(.google.api.field_behavior) = REQUIRED];</code>

@return This builder for chaining.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java