public Builder mergeIdleDuration(com.google.protobuf.Duration value) {
      if (idleDurationBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && idleDuration_ != null
            && idleDuration_ != com.google.protobuf.Duration.getDefaultInstance()) {
          getIdleDurationBuilder().mergeFrom(value);
        } else {
          idleDuration_ = value;
        }
      } else {
        idleDurationBuilder_.mergeFrom(value);
      }
      if (idleDuration_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
The idle duration between replication stages.
</pre>

<code>.google.protobuf.Duration idle_duration = 1;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/SchedulePolicy.java