MappingSequenceNode seq1 = new MappingSequenceNode();
seq1.addChildElement(new MappingElement("key", "xqttest.data.intKey")); //$NON-NLS-1$ //$NON-NLS-2$
seq1.addChildElement(new MappingElement("data", "xqttest.data.intNum")); //$NON-NLS-1$ //$NON-NLS-2$
src1.addSequenceNode(seq1);
MappingElement src2 = seq1.addChildElement(new MappingElement("srcNested")); //$NON-NLS-1$
src2.setSource("xqttest.data2"); //$NON-NLS-1$
MappingSequenceNode seq2 = src2.addSequenceNode(new MappingSequenceNode());
seq2.addChildElement(new MappingElement("key", "xqttest.data2.intKey")); //$NON-NLS-1$ //$NON-NLS-2$
seq2.addChildElement(new MappingElement("data", "xqttest.data2.intNum")); //$NON-NLS-1$ //$NON-NLS-2$