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1.  final def !=(arg0: Any): Boolean

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2.  final def ##(): Int

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3.  final def ==(arg0: Any): Boolean

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4.  def appendColumn(schema: StructType, colName: String, dataType: DataType, nullable: Boolean = false): StructType
5.  def appendVectorUDTColumn(schema: StructType, colName: String, dataType: DataType = new VectorUDT, nullable: Boolean = false): StructType
6.  final def asInstanceOf[T0]: T0

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7.  def checkNumericType(schema: StructType, colName: String, msg: String = ""): Unit
8.  def clone(): AnyRef

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   protected[lang]

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9.  final def eq(arg0: AnyRef): Boolean

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10.  def equals(arg0: Any): Boolean

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11.  def finalize(): Unit

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    @throws( classOf[java.lang.Throwable] )

12.  final def getClass(): Class[_]

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    @native()

13.  def getNumClasses(dataset: Dataset[_], labelCol: String, maxNumClasses: Int = 100): Int
14.  def hashCode(): Int

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    @native()

15.  final def isInstanceOf[T0]: Boolean

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16.  def isVectorType(dataType: DataType): Boolean
17.  def loadMetadata(path: String, sc: SparkContext, expectedClassName: String = ""): Metadata
18.  final def ne(arg0: AnyRef): Boolean

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19.  final def notify(): Unit

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    @native()

20.  final def notifyAll(): Unit

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    @native()

21.  def saveMetadata(instance: Params, path: String, sc: SparkContext, extraMetadata: Option[JObject] = None, paramMap: Option[JValue] = None): Unit
22.  final def synchronized[T0](arg0: ⇒ T0): T0

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23.  def toString(): String

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24.  final def wait(): Unit

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    @throws( ... )

25.  final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )

26.  final def wait(arg0: Long): Unit

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    @throws( ... ) @native()