class_docstr: Determines the number of values less than a controllable threshold.
  
  Args:
      threshold (float): The threshold to use when counting the number
          of values less than. Defaults to 10.
  
  Examples:
      >>> count_less_than = CountLessThan(threshold=3.5)
      >>> count_less_than([1, 2, 3, 4, 5])
      3
code: def get_function(self):
      def count_less_than(x):
          return x[x < self.threshold].count()
  
      return count_less_than
  
imports: from woodwork.column_schema import ColumnSchema
  from woodwork.logical_types import Integer
  from featuretools.primitives.base.aggregation_primitive_base import AggregationPrimitive
label_desc: Use image node_id 2 for calling the CountLessThan obj's underlying member method code with example usage: obj.get_function() and returns: count_less_than, x