Apply class decorators to all consumer methods

[daa]

Fixes #119 .

Changes proposed in this pull request:

• Apply class decorator to all consumer method including inherited
• Effectively revert changes made in Method annotations incorrectly decorate inherited consumer methods #27

Attention: @prkumar

[codecov]

Codecov Report

Merging #138 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #138   +/-   ##
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  Coverage     100%   100%           
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  Files          40     40           
  Lines        1975   1975           
  Branches      163    163           
=====================================
  Hits         1975   1975

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[prkumar]

Awesome @daa! 👍 Thanks for addressing this.