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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 find_element_by_partial_link_text(self, link_text):
 """ Finds an element by a partial match of its link text. :Args: - link_text: The text of the element to partially match on. :Returns: - WebElement - the element if it was found :Raises: - NoSuchElementException - if the element wasn't found :Usage: :: element = driver.find_element_by_partial_link_text('Sign') """

        return self.find_element(by=By.PARTIAL_LINK_TEXT, value=link_text)