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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _property_table():
 """Download the PDB -> resolution table directly from the RCSB PDB REST service. See the other fields that you can get here: http://www.rcsb.org/pdb/results/reportField.do Returns: Pandas DataFrame: table of structureId as the index, resolution and experimentalTechnique as the columns """

    url = 'http://www.rcsb.org/pdb/rest/customReport.csv?pdbids=*&customReportColumns=structureId,resolution,experimentalTechnique,releaseDate&service=wsfile&format=csv'
    r = requests.get(url)
    p = pd.read_csv(StringIO(r.text)).set_index('structureId')
    return p