public java.lang.String getQuery() {
      java.lang.Object ref = query_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        query_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
Required. Supported queries:
1. ""                       : Lists all revisions across all deployments.
2. "latest=true"            : Lists latest revisions across all
deployments.
3. "name={name}"            : Lists all revisions of deployment with name
{name}.
4. "name={name} latest=true": Lists latest revision of deployment with name
{name}
</pre>

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

@return The query.
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/SearchDeploymentRevisionsRequest.java