Allow setting headers and waitTime seconds

[longquanzheng]

No description provided.

[codecov]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (db7f7c7) 72.22% compared to head (87c4864) 71.69%.

Files	Patch %	Lines
...ain/java/io/iworkflow/core/UnregisteredClient.java	20.00%	6 Missing and 2 partials ⚠️
src/main/java/io/iworkflow/core/Client.java	0.00%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #213      +/-   ##
============================================
- Coverage     72.22%   71.69%   -0.54%     
- Complexity      396      397       +1     
============================================
  Files            61       61              
  Lines          1624     1639      +15     
  Branches        147      149       +2     
============================================
+ Hits           1173     1175       +2     
- Misses          376      387      +11     
- Partials         75       77       +2     

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