@java.lang.Override
  public java.lang.String getFilter() {
    java.lang.Object ref = filter_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      filter_ = s;
      return s;
    }
  }
<pre>
Required. The filter string specifies the jobs to be deleted.

Supported operator: =, AND

The fields eligible for filtering are:

* `companyName` (Required)
* `requisitionId` (Required)

Sample Query: companyName = "projects/foo/companies/bar" AND
requisitionId = "req-1"
</pre>

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

@return The filter.
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/BatchDeleteJobsRequest.java