as_contract_block       Convert a Validator to a Multi-Line Block
as_contract_text        Convert a Validator to Plain Text
require_between         Require Value in Range
require_character       Require Character Type
require_col_between     Require Column Values in Range
require_col_character   Require Character Column
require_col_numeric     Require Numeric Column
require_col_one_of      Require Column Values from a Set
require_custom          Create a Custom Validation Step
require_df              Require a Data Frame
require_finite          Require Finite Values
require_has_cols        Require Specific Columns
require_integer         Require Integer Type
require_length          Require Specific Length
require_length_matches
                        Require Length Matching an Expression
require_length_max      Require Maximum Length
require_length_min      Require Minimum Length
require_logical         Require Logical Type
require_no_na           Require No NA Values
require_nrow_matches    Require Row Count Matching an Expression
require_nrow_min        Require Minimum Number of Rows
require_numeric         Require Numeric Type
require_one_of          Require Value from a Set
restrict                Create a Composable Validator
