rest-assured/src/main/java/io/restassured/config/EncoderConfig.java
public EncoderConfig defaultQueryParameterCharset(String charset) {
        return new EncoderConfig(defaultContentCharset, charset, shouldAppendDefaultContentCharsetToContentTypeIfUndefined, contentEncoders, contentTypeToDefaultCharset, true);
    }
public EncoderConfig defaultQueryParameterCharset(String charset) {
        return new EncoderConfig(defaultContentCharset, charset, shouldAppendDefaultContentCharsetToContentTypeIfUndefined, contentEncoders, contentTypeToDefaultCharset, true);
    }
Specify the default charset for query parameters

@param charset The charset to use.
@return A new instance of {@link EncoderConfig}