public Builder clearFilter() {
      filter_ = getDefaultInstance().getFilter();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
The filter expression. The expression must be in the format: &lt;field&gt;
&lt;operator&gt; &lt;value&gt;.
Supported field: 'finding_type'.
Supported operator: '='.
</pre>

<code>string filter = 2;</code>

@return This builder for chaining.
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ListFindingsRequest.java