def example_doc_1():
'''First example from scheme pprint lib'''
return vappend(nest(4, vappend(text("while (true) {"),
text("f();"),
nest(4, vappend(text("if (done())"),
text("exit();"))))),
text("}"))
def example_doc_3():
'''A simple group example'''
return happend(hsappend(text('public'), text('void'), text('mymethod')),
text('('),
align(group(vappend(
happend(text('Type1'), text(' '), text('arg1'), text(',')),
happend(text('Type2'), text(' '), text('arg2'), text(',')),
happend(text('Type3'), text(' '), text('arg3'), text(',')),
happend(text('Type4'), text(' '), text('arg4'))))),
text(')'),
text(';'))
