<dependency>
  <groupId>me.tongfei</groupId>
  <artifactId>poly-io_2.11</artifactId>
  <version>0.2.1</version>
</dependency>

implementation 'me.tongfei:poly-io_2.11:0.2.1'

implementation("me.tongfei:poly-io_2.11:0.2.1")

libraryDependencies += "me.tongfei" % "poly-io_2.11" % "0.2.1"

@Grapes(
  @Grab(group='me.tongfei', module='poly-io_2.11', version='0.2.1')
)

<dependency org="me.tongfei" name="poly-io_2.11" rev="0.2.1" />

[me.tongfei/poly-io_2.11 "0.2.1"]

'me.tongfei:poly-io_2.11:jar:0.2.1'