def get_keys_next(next_page_link, custom_headers:nil)
      response = get_keys_next_async(next_page_link, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def get_keys_next(next_page_link, custom_headers:nil)
      response = get_keys_next_async(next_page_link, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
List keys in the specified vault.

 Retrieves a list of the keys in the Key Vault as JSON Web Key structures that
 contain the public part of a stored key. The LIST operation is applicable to
 all key types, however only the base key identifier, attributes, and tags are
 provided in the response. Individual versions of a key are not listed in the
 response. This operation requires the keys/list permission.

 @param next_page_link [String] The NextLink from the previous successful call
 to List operation.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [KeyListResult] operation results.