I found two pages that mention contributing using Eclipse

• https://github.com/hibernate/hibernate-orm/blob/master/CONTRIBUTING.md
• https://developer.jboss.org/wiki/ContributingToHibernateUsingEclipse

They mention one should run

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./gradlew clean eclipse --refresh-dependencies
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However this fails with

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$ ./gradlew clean eclipse --refresh-dependencies

FAILURE: Build failed with an exception.

What went wrong:
Task ‘eclipse’ not found in root project ‘hibernate-orm’.

Try:
Run gradlew tasks to get a list of available tasks. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
See https://docs.gradle.org/4.6/userguide/command_line_interface.html#sec:command_line_warnings
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