Finds elements by a partial match of their link text.

        :Args:
         - link_text: The text of the element to partial match on.

        :Returns:
         - list of webelement - a list with elements if any was found.  an
           empty list if not

        :Usage:
            ::

                elements = driver.find_elements_by_partial_link_text('Sign')

def find_elements_by_partial_link_text(self, link_text):
        """
        Finds elements by a partial match of their link text.

        :Args:
         - link_text: The text of the element to partial match on.

        :Returns:
         - list of webelement - a list with elements if any was found.  an
           empty list if not

        :Usage:
            ::

                elements = driver.find_elements_by_partial_link_text('Sign')
        """
        return self.find_elements(by=By.PARTIAL_LINK_TEXT, value=link_text)