import json


def get_placeholder_value_given_type(value):
    """Given an a parameter type, return a placeholder value"""
    # string, array, object, boolean, integer, float, or datetime.
    if value.lower() == "string":
        return json.dumps("")
    elif value.lower() == "array":
        return []
    elif value.lower() == "object":
        return {}
    elif value.lower() == "boolean":
        return "false"
    elif value.lower() == "integer":
        return 0
    elif value.lower() == "float":
        return 0
    elif value.lower() == "datetime":
        return "2021-04-01T00:00:00.fffffffZ"