change loadPolicy method's invoke

[lexnow]

🎨 only fileAdapter automatic invoke loadPolicy method, others must invoke manually

[coveralls]

Pull Request Test Coverage Report for Build 27

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.09%) to 48.384%

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Totals
Change from base Build 24:	0.09%
Covered Lines:	432
Relevant Lines:	822

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💛 - Coveralls