DataFrameValidator

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def assertSchemaContains(schema: StructType, subSchema: StructType): Unit

throws exception when $schema does not subsumes the $subSchema

def checkSchemaContains(schema: StructType, subSchema: StructType): Boolean

return true if $schema subsumes the $subSchema.

val schemaA =
   StructType(
     Seq(
       StructField("col1", StringType, true),
       StructField("col2", DoubleType, true),
       StructField("col3", DoubleType, true)
       )
   )
val schemaB =
   StructType(
     Seq(
       StructField("col1", StringType, true),
       StructField("col2", IntegerType, true),
       )
   )

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

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

final def wait(arg0: Long): Unit

final def wait(): Unit

def finalize(): Unit