there, we need to do several things to add capability to the default
  configuration of plexus. This document will detail those changes.

Container Enhancements

* ExpressionEvaluator

  Currently, the expression evaluator used to resolve configuration values
  is the DefaultExpressionEvaluator, which is a local variable within the
  implementation of the BasicComponentConfigurator. This ExpressionEvaluator

 ({{{./xref/org/apache/maven/plugin/internal/DefaultMavenPluginManager.html}source}}),

 * {{{./apidocs/org/apache/maven/plugin/PluginParameterExpressionEvaluator.html}PluginParameterExpressionEvaluator}}, used to
 evaluate plugin parameters values during Mojo configuration,

 * <<<ExceptionHandler>>> component ({{{./apidocs/org/apache/maven/exception/ExceptionHandler.html}javadoc}}),
 with its <<<DefaultExceptionHandler>>> implementation