How to use the afdko.pdfutils._escape function in afdko

def save(self, file):
        file.write((LINEEND.join([
                "<>"
                ]) % (
    pdfutils._escape(self.title),
    pdfutils._escape(self.author),
    self.datestr,
    pdfutils._escape(self.subject)
    ) + LINEEND).encode('utf-8'))

def save(self, file):
        file.write(LINEEND.join([
                "<>"
                ]) % (
    pdfutils._escape(self.title),
    pdfutils._escape(self.author),
    self.datestr,
    pdfutils._escape(self.subject)
    ) + LINEEND)

def save(self, file):
        file.write(LINEEND.join([
                "<>"
                ]) % (
    pdfutils._escape(self.title),
    pdfutils._escape(self.author),
    self.datestr,
    pdfutils._escape(self.subject)
    ) + LINEEND)

def save(self, file):
        file.write((LINEEND.join([
                "<>"
                ]) % (
    pdfutils._escape(self.title),
    pdfutils._escape(self.author),
    self.datestr,
    pdfutils._escape(self.subject)
    ) + LINEEND).encode('utf-8'))

def save(self, file):
        file.write((LINEEND.join([
                "<>"
                ]) % (
    pdfutils._escape(self.title),
    pdfutils._escape(self.author),
    self.datestr,
    pdfutils._escape(self.subject)
    ) + LINEEND).encode('utf-8'))

def save(self, file):
        file.write(LINEEND.join([
                "<>"
                ]) % (
    pdfutils._escape(self.title),
    pdfutils._escape(self.author),
    self.datestr,
    pdfutils._escape(self.subject)
    ) + LINEEND)