<das:element> tag describes a single xml tag in the ouptut xml file.
<das:element name="employees" namespace-prefix="ns" namespace-uri="http://mycorporation.com">
Attributes:
id - unique identifier of this resource in the current processing job.
name - the name of the element in the resulting xml.
namespace-prefix - the prefix of the namespace of the resulting xml tag.
namespace-uri - the uri of the namespace of the resulting xml tag.
Children elements:
<das:element> - elements can be nested.
<das:element-sequence> - describe a sequence of children elements of the current element.
<das:attributes> - element attributes in the resulting xml.