class_docstr: Determines whether or not a series of discrete is all unique.
  
  Description:
      Given a series of discrete values, return True if each
      value in the series is unique. If any value is repeated,
      return False.
  
  Examples:
      >>> is_unique = IsUnique()
      >>> is_unique(['red', 'blue', 'green', 'yellow'])
      True
  
      If the series is not unique, return False
  
      >>> is_unique = IsUnique()
      >>> is_unique(['red', 'blue', 'green', 'blue'])
      False
class_docstr_tok: ["Determines","whether","or","not","a","series","of","discrete","is","all","unique",".","Description",":","Given","a","series","of","discrete","values",",","return","True","if","each","value","in","the","series","is","unique",".","If","any","value","is","repeated",",","return","False",".","Examples",":",">",">",">","is_unique","=","IsUnique","(",")",">",">",">","is_unique","(","[","'red","'",",","'blue","'",",","'green","'",",","'yellow","'","]",")","True","If","the","series","is","not","unique",",","return","False",">",">",">","is_unique","=","IsUnique","(",")",">",">",">","is_unique","(","[","'red","'",",","'blue","'",",","'green","'",",","'blue","'","]",")","False"]
code: def get_function(self):
      def is_unique(x):
          return x.is_unique
  
      return is_unique
  
imports: from woodwork.column_schema import ColumnSchema
  from woodwork.logical_types import BooleanNullable
  from featuretools.primitives.base import AggregationPrimitive
label_desc: Use image node_id 1 for calling the IsUnique obj's underlying member method code with example usage: obj.get_function() and returns: is_unique, x