how to understand api documentation code example

Example 1: what to write in api documentation

Source of the content
Document plan or sketch
Delivery layout
Information needed for every function in the document
Automatic document creation programs

Example 2: what is api documentation

The API documentation is a complete, 
accurate technical writing giving
instructions on how to effectively 
use and integrate with an API. It is
a compact reference manual that has 
all the information needed to work with
the API, and helps you answer all the
API testing questions with details on 
functions, classes, return types, arguments, 
and also examples and tutorials.