private void ensureErrorLogEntriesIsMutable() {
      if (!((bitField0_ & 0x00000004) != 0)) {
        errorLogEntries_ =
            new java.util.ArrayList<com.google.cloud.storagebatchoperations.v1.ErrorLogEntry>(
                errorLogEntries_);
        bitField0_ |= 0x00000004;
      }
    }
<pre>
Required. Number of errors encountered per `error_code`.
</pre>

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

@return This builder for chaining.
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/ErrorSummary.java