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<Button android:id="@+id/buttonA" ... />
         <Button android:id="@+id/buttonB" ...
                 app:layout_constraintLeft_toRightOf="@+id/buttonA" />

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apply plugin: 'java'
apply plugin: 'eclipse'

sourceCompatibility = 1.5
version = '1.0'
jar {
    manifest {
        attributes 'Implementation-Title': 'Gradle Quickstart',
                   'Implementation-Version': version
    }

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tasks.create(name: 'hello') << {
   println "hello behindjava"
}

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task('hello') << {
   println "hello behindjava"
}

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task hello << {
   println 'hello behindjava'
}

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task hello {
   doLast {
      println 'hello behindjava'
   }
}

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repositories {
    maven {
        url "http://repo.mycompany.com/releases"
        mavenContent {
            releasesOnly()
        }
    }
    maven {
        url "http://repo.mycompany.com/snapshots"
        mavenContent {

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repositories {
    maven {
        url "http://repo.mycompany.com/maven2"
        content {
            // this repository *only* contains artifacts with group "my.company"
            includeGroup "my.company"
        }
    }
    jcenter {
        content {

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repositories {
    jcenter()
    maven {
        url "https://maven.springframework.org/release"
    }
    maven {
        url "https://maven.restlet.com"
    }
}

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repositories {
    maven {
      url 'http://repo.mycompany.com/maven2'
    }
}