public Builder clearPrimaryInstance() {
        bitField0_ = (bitField0_ & ~0x00000001);
        primaryInstance_ = null;
        if (primaryInstanceBuilder_ != null) {
          primaryInstanceBuilder_.dispose();
          primaryInstanceBuilder_ = null;
        }
        onChanged();
        return this;
      }
<pre>
Output only. The primary instance that acts as the source of replication
for the secondary instances.
</pre>

<code>
.google.cloud.memorystore.v1.CrossInstanceReplicationConfig.RemoteInstance primary_instance = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/CrossInstanceReplicationConfig.java