In the eg subroutine,you have to call the test subroutine by in the following two ways.
$_[0]->test(pop); #Here $_[0] contains the class name.
#first interpreter will check test is defined in Two or not.
#If it isn't defined,then it will check the method in One package beca
+use of use base function
One::test(pop); #calling the test method using the class name One beca
+use test isn't in Two's package workspace
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