Fuzz introspector: StringSubstitutorFuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer calltree

0 [com.example.StringSubstitutorFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) [function] [call site] 00000
1 [HashMap].<init>() [function] [call site] 00001
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00002
1 [HashMap].put(String,String) [function] [call site] 00003
1 [org.apache.commons.text.StringSubstitutor].<init>(HashMap) [function] [call site] 00004
1 [org.apache.commons.text.StringSubstitutor].replace(com.example.StringSubstitutorFuzzer) [function] [call site] 00005