Explain few considerations for @Future annotation in Apex.

• Method must be static
• Cannot return anything ( Only Void )
• To test @future methods, you should use startTest and stopTest to make it synchromouse inside Test class.
• Parameter to @future method can only be primitive or collection of primitive data type.
• Cannot be used inside VF in Constructor, Set or Get methods.
• @future method cannot call other @future method.