public static void main(String[] args) {
        ConnectStandalone connectStandalone = new ConnectStandalone(args);
        connectStandalone.run();
    }
Parse a connector configuration file into a {@link CreateConnectorRequest}. The file can have any one of the following formats (note that
we attempt to parse the file in this order):
<ol>
    <li>A JSON file containing an Object with only String keys and values that represent the connector configuration.</li>
    <li>A JSON file containing an Object that can be parsed directly into a {@link CreateConnectorRequest}</li>
    <li>A valid Java Properties file (i.e. containing String key/value pairs representing the connector configuration)</li>
</ol>
<p>
Visible for testing.

@param filePath the path of the connector configuration file
@return the parsed connector configuration in the form of a {@link CreateConnectorRequest}
connect/runtime/src/main/java/org/apache/kafka/connect/cli/ConnectStandalone.java