<dependency>
  <groupId>org.apache.tomcat</groupId>
  <artifactId>tomcat-api</artifactId>
  <version>8.5.99</version>
</dependency>

implementation 'org.apache.tomcat:tomcat-api:8.5.99'

implementation("org.apache.tomcat:tomcat-api:8.5.99")

libraryDependencies += "org.apache.tomcat" % "tomcat-api" % "8.5.99"

@Grapes(
  @Grab(group='org.apache.tomcat', module='tomcat-api', version='8.5.99')
)

<dependency org="org.apache.tomcat" name="tomcat-api" rev="8.5.99" />

[org.apache.tomcat/tomcat-api "8.5.99"]

'org.apache.tomcat:tomcat-api:jar:8.5.99'