def add(self, lineitem):
<EOL>if lineitem['<STR_LIT>']:<EOL><INDENT>self._lineitems.append(lineitem)<EOL>if lineitem['<STR_LIT>']:<EOL><INDENT>self._blended_cost += lineitem['<STR_LIT>']<EOL><DEDENT>if lineitem['<STR_LIT>']:<EOL><INDENT>self._unblended_cost += lineitem['<STR_LIT>']<EOL><DEDENT><DEDENT>
Add a line item record to this Costs object.