public Builder clearFilter() {
      filter_ = getDefaultInstance().getFilter();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
Required. The filter string specifies the jobs to be enumerated.

Supported operator: =, AND

The fields eligible for filtering are:

* `companyName`
* `requisitionId`
* `status` Available values: OPEN, EXPIRED, ALL. Defaults to
OPEN if no value is specified.

At least one of `companyName` and `requisitionId` must present or an
INVALID_ARGUMENT error is thrown.

Sample Query:

* companyName = "projects/foo/tenants/bar/companies/baz"
* companyName = "projects/foo/tenants/bar/companies/baz" AND
requisitionId = "req-1"
* companyName = "projects/foo/tenants/bar/companies/baz" AND
status = "EXPIRED"
* requisitionId = "req-1"
* requisitionId = "req-1" AND status = "EXPIRED"
</pre>

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

@return This builder for chaining.
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ListJobsRequest.java