<dependency>
  <groupId>org.reactivemongo</groupId>
  <artifactId>reactivemongo-core_2.12</artifactId>
  <version>1.0.0</version>
</dependency>

implementation 'org.reactivemongo:reactivemongo-core_2.12:1.0.0'

implementation("org.reactivemongo:reactivemongo-core_2.12:1.0.0")

libraryDependencies += "org.reactivemongo" % "reactivemongo-core_2.12" % "1.0.0"

@Grapes(
  @Grab(group='org.reactivemongo', module='reactivemongo-core_2.12', version='1.0.0')
)

<dependency org="org.reactivemongo" name="reactivemongo-core_2.12" rev="1.0.0" />

[org.reactivemongo/reactivemongo-core_2.12 "1.0.0"]

'org.reactivemongo:reactivemongo-core_2.12:jar:1.0.0'