<dependency>
  <groupId>io.projectreactor.addons</groupId>
  <artifactId>reactor-extra</artifactId>
  <version>3.1.9.RELEASE</version>
</dependency>

implementation 'io.projectreactor.addons:reactor-extra:3.1.9.RELEASE'

implementation("io.projectreactor.addons:reactor-extra:3.1.9.RELEASE")

libraryDependencies += "io.projectreactor.addons" % "reactor-extra" % "3.1.9.RELEASE"

@Grapes(
  @Grab(group='io.projectreactor.addons', module='reactor-extra', version='3.1.9.RELEASE')
)

<dependency org="io.projectreactor.addons" name="reactor-extra" rev="3.1.9.RELEASE" />

[io.projectreactor.addons/reactor-extra "3.1.9.RELEASE"]

'io.projectreactor.addons:reactor-extra:jar:3.1.9.RELEASE'