Request to include pre-scm as part of SCM

[Vinodhini Vijay]

Hello All,

This is with respect to BuildWrapper java class and SCM class.

pres-scm build step Jenkins plugin uses this class: https://github.com/jenkinsci/pre-scm-buildstep-plugin/blob/master/src/main/java/org/jenkinsci/plugins/preSCMbuildstep/PreSCMBuildStepsWrapper.java

Only if I checkbox -Run buildstep before SCM runs- is selected in pre-scm plugin,  the pre checkout part is included in the job.

I would like to combine the above functionality within my SCM plugin ( so that user need not select any option like "Build Environment > Run buildstep before SCM runs".)

Also, this is my understanding:

If a class has a static nested class (DescriptorImpl), extending from Descriptor, then a corresponding input details would be displayed in job configuration page. If we want to include this feature as part of my custom SCM plugin, the steps to include this by default is not known. How could I do this?

Kindly help me

Thanks
Vinodhini