def test_2():

# def test_3():
#     """
#     >>> t = \"\"\"
#     ... Text
#     ... <t:panel a="b">
#     ... <head>head</head>
#     ... <t:button class="primary">Submit</t:button>
#     ... </t:panel>
#     ... End\"\"\"
#     >>> print parse(t, loader) # doctest: +REPORT_UDIFF
#     <BLANKLINE>
#     Text
#     <div a="b" class=" panel">
#       <div class="panel-head">
#         <h3>head</h3>
#     <BLANKLINE>
#             <button class="btn btn-primary">Submit</button>
#     <BLANKLINE>
#       </div>
#     </div>
#     End
#     """
Return a 4-elements list with the desired padding.
dataset/ETHPy150Open limodou/uliweb/test/test_taglibs.py/test_2--crossover with--dataset/ETHPy150Open jorgebastida/glue/glue/core.py/Image.padding