Use isEmpty to check whether the data is empty

[jolyot]

This PR is for the issue #2152

This is not a breaking API change, therefore I'm opening this PR towards the master branch.

[BasThomas]

We should point this to development instead of the main branch; we're planning to release a new version imminently, and to make sure everything can be merged as expected would be great.

Thanks! 😊

[BasThomas]

Awesome, thanks!

[OhKanghoon]

👍

[MoyaBot]

	Warnings
⚠️	Found a configuration for 'file_length' rule, but it is disabled on 'disabled_rules'.
⚠️	Found a configuration for 'file_length' rule, but it is disabled on 'disabled_rules'.
⚠️	Found a configuration for 'file_length' rule, but it is disabled on 'disabled_rules'.
⚠️	The library files were changed, but the tests remained unmodified. Consider updating or adding to the tests to match the library changes.
⚠️	Any changes to library code should be reflected in the Changelog. Please consider adding a note there and adhere to the Changelog Guidelines.
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L241 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L241 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L241 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L253 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L253 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L253 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L268 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L268 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it
⚠️	Tests/MoyaTests/MoyaProviderSpec.swift#L268 - initialization of immutable value 'token' was never used; consider replacing with assignment to '_' or removing it

	Messages
📖	macOS: Executed 321 tests, with 0 failures (0 unexpected) in 16.840 (17.125) seconds
📖	tvOS: Executed 321 tests, with 0 failures (0 unexpected) in 14.159 (14.539) seconds
📖	iOS: Executed 321 tests, with 0 failures (0 unexpected) in 14.227 (14.583) seconds

Generated by 🚫 Danger Swift against cfcf882

[codecov-commenter]

Codecov Report

Merging #2194 (cfcf882) into development (975110e) will increase coverage by 3.21%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #2194      +/-   ##
===============================================
+ Coverage        88.78%   92.00%   +3.21%     
===============================================
  Files               30        5      -25     
  Lines              972       25     -947     
===============================================
- Hits               863       23     -840     
+ Misses             109        2     -107     

Impacted Files	Coverage Δ
Sources/Moya/Atomic.swift	100.00% <0.00%> (ø)
Sources/Moya/Cancellable.swift	100.00% <0.00%> (ø)
Sources/ReactiveMoya/SignalProducer+Response.swift
Sources/Moya/MultiTarget.swift
Sources/Moya/Plugins/AccessTokenPlugin.swift
Sources/Moya/Plugin.swift
Sources/Moya/MoyaProvider+Defaults.swift
Sources/Moya/MoyaError.swift
Sources/Moya/Plugins/CredentialsPlugin.swift
Sources/CombineMoya/AnyPublisher+Response.swift
... and 17 more

---

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