@java.lang.Override
  public com.google.protobuf.Parser<ProductSearchParams> getParserForType() {
    return PARSER;
  }
<pre>
The filtering expression. This can be used to restrict search results based
on Product labels. We currently support an AND of OR of key-value
expressions, where each expression within an OR must have the same key. An
'=' should be used to connect the key and value.

For example, "(color = red OR color = blue) AND brand = Google" is
acceptable, but "(color = red OR brand = Google)" is not acceptable.
"color: red" is not acceptable because it uses a ':' instead of an '='.
</pre>

<code>string filter = 8;</code>

@param value The bytes for filter to set.
@return This builder for chaining.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchParams.java