* create
* iterator
* add
* insert: Insert a new element.
* change
* operator[]: Access element
* swap: Swap the contents of one container with another container of same type. Sizes may differ.
* query
* element
* at: Access element.
* find: Get element.
* count: Count elements with a specific value.
* lower_bound: Return lower bound.
* upper_bould: Return upper bound.
* equal_range: Get range of equal elements.
* container
* empty: Return whether the container is empty.
* size: Return the number of elements.
* max_size: Returns the maximum number of elements the container can hold.
* delete
* erase: Remove a element.
* clear: Remove all elements.