public ApiGatewayClientConfiguration connectionConfiguration(ConnectionConfiguration connectionConfiguration) {
        setConnectionConfiguration(connectionConfiguration);
        return this;
    }
Sets various options related to the http connection pool and connections.

@param connectionConfiguration The {@link ConnectionConfiguration} object with the custom values.
@return This object for method chaining.
aws-java-sdk-opensdk/src/main/java/com/amazonaws/opensdk/internal/config/ApiGatewayClientConfiguration.java