code: def text_should_be_visible(self, text, exact_match=False, loglevel='INFO'):
          
          if not self._element_find_by_text(text, exact_match).is_displayed():
              self.log_source(loglevel)
              raise AssertionError("Text '%s' should be visible "
                                   "but did not" % text)
docs: Verifies that element identified with text is visible.
  
          New in AppiumLibrary 1.4.5