commons-lang3

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

when generating code with "python-pydantic-v1"

class org.apache.commons.lang3.Strings 
  tried to access method 
  'boolean org.apache.commons.lang3.CharSequenceUtils.regionMatches(java.lang.CharSequence, boolean, int, java.lang.CharSequence, int, int)' (org.apache.commons.lang3.Strings is in unnamed module of loader org.gradle.internal.classloader.VisitableURLClassLoader$InstrumentingVisitableURLClassLoader @5024e352; org.apache.commons.lang3.CharSequenceUtils  
  is in unnamed module of loader 
org.gradle.internal.classloader.VisitableURLClassLoader$InstrumentingVisitableURLClassLoader @3d8c2292)

ERROR

openapi-generator version

affected version 7.19.0 , 7.18.0 , and 7.17.0

Start by reproducing generation with the python-pydantic-v1 generator on OpenAPI Generator 7.19.0, then inspect how the generator loads commons-lang3 and the failing String/CharSequenceUtils call. Compare behavior with 7.18.0 and 7.17.0; done means the reported access error no longer occurs during generation.