public ConfigDef define(String name, Type type, Object defaultValue, Importance importance, String documentation) {
        return define(name, type, defaultValue, null, importance, documentation);
    }
Define a new configuration with no special validation logic
@param name          The name of the config parameter
@param type          The type of the config
@param defaultValue  The default value to use if this config isn't present
@param importance    The importance of this config: is this something you will likely need to change.
@param documentation The documentation string for the config
@return This ConfigDef so you can chain calls
clients/src/main/java/org/apache/kafka/common/config/ConfigDef.java