Use splitindex for google-api-grpc javadoc.

[kolea2]

No description provided.

[kolea2]

@chingor13 PTAL

[codecov]

Codecov Report

Merging #4952 into master will decrease coverage by 0.33%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4952      +/-   ##
============================================
- Coverage     50.36%   50.02%   -0.34%     
  Complexity    23666    23666              
============================================
  Files          2233     2233              
  Lines        225860   225808      -52     
  Branches      24956    24190     -766     
============================================
- Hits         113744   112966     -778     
+ Misses       103519   103508      -11     
- Partials       8597     9334     +737

Impacted Files	Coverage Δ	Complexity Δ
...va/com/google/cloud/compute/v1/InstanceClient.java	48.95% <0%> (-6.46%)	139% <0%> (ø)
...ava/com/google/cloud/compute/v1/ProjectClient.java	51.14% <0%> (-5.94%)	55% <0%> (ø)
...ava/com/google/cloud/compute/v1/NetworkClient.java	49.63% <0%> (-5.84%)	35% <0%> (ø)
...ava/com/google/cloud/compute/v1/LicenseClient.java	50.41% <0%> (-5.79%)	31% <0%> (ø)
.../com/google/cloud/compute/v1/RegionDiskClient.java	48.92% <0%> (-5.76%)	35% <0%> (ø)
...va/com/google/cloud/compute/v1/SnapshotClient.java	50% <0%> (-5.74%)	31% <0%> (ø)
.../java/com/google/cloud/compute/v1/ImageClient.java	49.04% <0%> (-5.74%)	43% <0%> (ø)
.../google/cloud/compute/v1/TargetSslProxyClient.java	48.57% <0%> (-5.72%)	35% <0%> (ø)
.../google/cloud/compute/v1/SecurityPolicyClient.java	48.1% <0%> (-5.7%)	39% <0%> (ø)
...d/compute/v1/RegionInstanceGroupManagerClient.java	48.81% <0%> (-5.69%)	51% <0%> (ø)
... and 140 more

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[chingor13]

Should we do it for google-cloud-clients as well?