public Builder mergeMachineSpec(com.google.cloud.vertexai.api.MachineSpec value) {
      if (machineSpecBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && machineSpec_ != null
            && machineSpec_ != com.google.cloud.vertexai.api.MachineSpec.getDefaultInstance()) {
          getMachineSpecBuilder().mergeFrom(value);
        } else {
          machineSpec_ = value;
        }
      } else {
        machineSpecBuilder_.mergeFrom(value);
      }
      if (machineSpec_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
Required. Immutable. The specification of a single machine used by the
prediction.
</pre>

<code>
.google.cloud.vertexai.v1.MachineSpec machine_spec = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.field_behavior) = IMMUTABLE];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/DedicatedResources.java