gen-accessors: update dumping of getters

[alexandear]

After merging this PR, the checks for #3433 will become green (I checked here).

The PR addresses the issue described in #3433 (comment): we need to guarantee the order of equal getters.

func (s*SMTP) GetUsername() string {
ifs==nil||s.Username==nil {
return""
}
return*s.Username
}
// GetUserName returns the UserName field if it's non-nil, zero value otherwise.func (s*SMTP) GetUserName() string {
ifs==nil||s.UserName==nil {
return""
}
return*s.UserName
}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.26%. Comparing base (2b8c7fa) to head (ec4431e).
Report is 223 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@## master #3437 +/- ##
==========================================
- Coverage 97.72% 92.26% -5.46% 
==========================================
Files 153 174 +21 Lines 13390 15023 +1633 ==========================================
+ Hits 13085 13861 +776 - Misses 215 1068 +853 - Partials 90 94 +4 

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[gmlewis]

Thank you, @alexandear !
LGTM.
Merging.