pub fn developer_user_identifier_list(
            mut self,
            input: impl Into<std::string::String>,
        ) -> Self {
            let mut v = self.developer_user_identifier_list.unwrap_or_default();
            v.push(input.into());
            self.developer_user_identifier_list = Some(v);
            self
        }
/// Appends an item to `developer_user_identifier_list`.
///
/// To override the contents of this collection use [`set_developer_user_identifier_list`](Self::set_developer_user_identifier_list).
///
/// <p>This is the list of developer user identifiers associated with an identity ID. Cognito supports the association of multiple developer user identifiers with an identity ID.</p>
Appends an item to `developer_user_identifier_list`.
To override the contents of this collection use [`set_developer_user_identifier_list`](Self::set_developer_user_identifier_list).

This is the list of developer user identifiers associated with an identity ID. Cognito supports the association of multiple developer user identifiers with an identity ID.
Appends an item to ` developer_user_identifier_list ` . To override the contents of this collection use [ ` set_developer_user_identifier_list ` ] ( Self :: set_developer_user_identifier_list ) . This is the list of developer user identifiers associated with an identity ID . Cognito supports the association of multiple developer user identifiers with an identity ID .
pub fn developer_user_identifier_list(
            mut self,
            input: impl Into<std::string::String>,
        ) -> Self {
            let mut v = self.developer_user_identifier_list.unwrap_or_default();
            v.push(input.into());
            self.developer_user_identifier_list = Some(v);
            self
        }
pub fn developer_user_identifier_list ( mut self , input : impl Into < std :: string :: String > , ) -> Self { let mut v = self . developer_user_identifier_list . unwrap_or_default ( ) ; v . push ( input . into ( ) ) ; self . developer_user_identifier_list = Some ( v ) ; self }
Appends an item to `developer_user_identifier_list`.
Appends an item to ` developer_user_identifier_list ` .
mut self
input
impl Into<std::string::String>
mut self
input
impl Into<std::string::String>