Returns the content of the specified pronunciation lexicon stored in an AWS Region. For more information, see Managing Lexicons.
/// Amazon Polly can't find the specified lexicon. This could be caused by a lexicon that
/// is missing, its name is misspelled or specifying a lexicon that is in a different
/// region.
///
///
///
/// Verify that the lexicon exists, is in the region (see ListLexicons) and that
/// you spelled its name is spelled correctly. Then try again.
///
///
/// An unknown condition has caused a service failure.
///