<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def full_stylesheet(self):
 """ Return the style sheet that will ultimately be inserted into the latex document. This is the user given style sheet plus some additional parts to add the meta data. """

        latex_fragment = r"""
        \usepackage[colorlinks=true,linkcolor=blue,urlcolor=blue]{hyperref}
        \hypersetup{
           pdftitle={%s},
           pdfauthor={%s},
           pdfsubject={%s}
        }
        """ % (self.document.properties.get("title"),
               self.document.properties.get("author"),
               self.document.properties.get("subject"))
        return latex_fragment + self.stylesheet