/**
     * Sets the user properties to use for interpolation and profile activation. The user properties have been
     * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
     * line.
     *
     * @param userProperties The user properties, may be {@code null}.
     * @return This request, never {@code null}.
     */

response to calls to the getInstance() method. The default implementation uses the following rules: At most one Log instance of the same name will be created. Subsequent getInstance() calls to the same LogFactory instance, with the same name or Class parameter, will return the same Log instance. When a new Log instance must be created, the default LogFactory implementation uses the following discovery process is used: Look for a configuration attribute of this factory named org.apache.commons.logging.Log...

    }

    /**
     * Sets the user properties to use for interpolation and profile activation. The user properties have been
     * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
     * line.
     *
     * @param userProperties The user properties, may be {@code null}.
     * @return This context, never {@code null}.
     */
    @SuppressWarnings("unchecked")

response to calls to the getInstance() method. The default implementation uses the following rules: At most one Log instance of the same name will be created. Subsequent getInstance() calls to the same LogFactory instance, with the same name or Class parameter, will return the same Log instance. When a new Log instance must be created, the default LogFactory implementation uses the following discovery process: Look for a configuration attribute of this factory named org.apache.commons.logging.Log (for...