if (src != null) {
            Xpp3Dom tgt = (Xpp3Dom) target.getConfiguration();
            if (tgt == null) {
                tgt = Xpp3Dom.mergeXpp3Dom(new Xpp3Dom(src), tgt);
            } else {
                tgt = Xpp3Dom.mergeXpp3Dom(tgt, src);
            }
            target.setConfiguration(tgt);
        }
    }

    protected Object getToolchainModelKey(ToolchainModel model) {

                    Xpp3Dom executionConfiguration = (Xpp3Dom) execution.getConfiguration();

                    executionConfiguration =
                            Xpp3Dom.mergeXpp3Dom(executionConfiguration, new Xpp3Dom(pluginConfiguration));

                    execution.setConfiguration(executionConfiguration);
                }
            }
        }
    }

                    for (ReportSet execution : reportPlugin.getReportSets()) {
                        Xpp3Dom childDom = (Xpp3Dom) execution.getConfiguration();
                        childDom = Xpp3Dom.mergeXpp3Dom(childDom, new Xpp3Dom(parentDom));
                        execution.setConfiguration(childDom);
                    }
                }
            }
        }
    }

getParent(); public void setParent(Xpp3Dom); public void writeToSerializer(String, pull.XmlSerializer) throws java.io.IOException; private static void mergeIntoXpp3Dom(Xpp3Dom, Xpp3Dom, Boolean); public static Xpp3Dom mergeXpp3Dom(Xpp3Dom, Xpp3Dom, Boolean); public static Xpp3Dom mergeXpp3Dom(Xpp3Dom, Xpp3Dom); public boolean equals(Object); public int hashCode(); public String toString(); public String toUnescapedString(); static void <clinit>(); } org/codehaus/plexus/util/xml/Xpp3DomBuilder.class package...

        if (src != null) {
            Xpp3Dom tgt = (Xpp3Dom) target.getConfiguration();
            if (sourceDominant || tgt == null) {
                tgt = Xpp3Dom.mergeXpp3Dom(new Xpp3Dom(src), tgt);
            } else {
                tgt = Xpp3Dom.mergeXpp3Dom(tgt, src);
            }
            target.setConfiguration(tgt);
        }
    }

    protected void mergePluginExecution(

                            if (executionConfiguration != null) {
                                Xpp3Dom newDom = new Xpp3Dom(executionConfiguration);
                                dom = Xpp3Dom.mergeXpp3Dom(newDom, dom);
                            }
                        }
                    }
                    break;
                }
            }
        }

        if (dom != null) {