I copy/pasted CreateExtractors logic from Echo core library here because it was made public in v4.10.0 but this library supports Echo versions v4.7.0+.
Lets wait some time (maybe until 2023 summer) and to reduce code duplication delete CreateExtractors logic in this library and use echo.CreateExtractors instead.
p.s. do not delete public method - make them use core. unforntunately I made them public