public Builder setPooledInstances(int value) {

          pooledInstances_ = value;
          bitField0_ |= 0x00000020;
          onChanged();
          return this;
        }
<pre>
Output only. Number of instances currently available in the pool for
faster workstation startup.
</pre>

<code>int32 pooled_instances = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@param value The pooledInstances to set.
@return This builder for chaining.
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java