Can I use the iterator Libraries' Access Functions on Nonstandard Containers?

The iterator library has been introducing a lot of access functions over the course of C++11, C++14, and C++17:

• begin/end
• cbegin/cend
• crbegin/crend
• data
• empty
• rbegin/rend
• size

Can I use these on any container, even nonstandard containers (provided they supply an accessible corresponding method?) For example given a QVector foo can I do this:

const auto bar = begin(foo);