refactor for using short names

[xujiajun]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 178

• 70 of 70 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 175:	0.0%
Covered Lines:	305
Relevant Lines:	305

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 178

• 70 of 70 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 175:	0.0%
Covered Lines:	305
Relevant Lines:	305

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 178

• 70 of 70 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 175:	0.0%
Covered Lines:	305
Relevant Lines:	305

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 178

• 70 of 70 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 175:	0.0%
Covered Lines:	305
Relevant Lines:	305

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 178

• 70 of 70 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 175:	0.0%
Covered Lines:	305
Relevant Lines:	305

---

💛 - Coveralls