def AOM_ask_value_strings(object_tag, prop_name__py_str):
    '''
    Input:
      tag_t       object_tag (I) -- < (I) Unique identifier (tag) of the object instance.
      const char* prop_name  (I) -- < (I) A property name of the object instance.
    Output:
      char*** values (OL(num)F) -- < (OF) num Actual values of the property. This must be a list or array 
                                          of constant chars. If the property is an array, the number of 
                                          values passed in must equal the size of the array.
                                          Iterate through the output array and call MEM_free on each element to de-allocate
                                          the nested memory block and then free the memory pointed by itself using MEM_free.

    Asks one or more values of a property. The property can be single-valued or multi-valued (i.e., array or list).
    
    This function uses #PROP_ask_value_strings_msg if multi-valued and #PROP_ask_value_string_msg if single-valued.
    To customize the behavior of this function, register a method against one of these messages.
    '''
    num = ffi.new('int*')
    values = ffi.new('char***')
    prop_name = prop_name__py_str if prop_name__py_str != None else ffi.NULL
    __pytk__ifail__return__ = itklib.AOM_ask_value_strings(object_tag, prop_name, num, values)
    iFail2Exception(__pytk__ifail__return__)
    values__py_list = [ffi.string(values[0][pytk_i]) if values[0][pytk_i] != ffi.NULL else None for pytk_i in xrange(num[0])]
    for pytk_i in xrange(num[0]):
        itklib.MEM_free(values[0][pytk_i])
    itklib.MEM_free(values[0])
    return values__py_list
def AOM_ask_value_tag(object_tag, prop_name__py_str):
    '''
    Input:
      tag_t       object_tag (I) -- < (I) Unique identifier (tag) of the object instance.
      const char* prop_name  (I) -- < (I) A property name of the object instance.
    Output:
      tag_t* value (O) -- < (O) Actual value of the property.

    Asks value of a single-valued property.
    
    This function uses #PROP_ask_value_tag_msg.
    To customize the behavior of this function, register a method against this message name.
    '''
    value = ffi.new('tag_t*')
    prop_name = prop_name__py_str if prop_name__py_str != None else ffi.NULL
    __pytk__ifail__return__ = itklib.AOM_ask_value_tag(object_tag, prop_name, value)
    iFail2Exception(__pytk__ifail__return__)
    return value[0]
def AOM_ask_value_tag_at(object_tag, prop_name__py_str, position):
    '''
    Input:
      tag_t       object_tag (I) -- < (I) Unique identifier (tag) of the object instance.
      const char* prop_name  (I) -- < (I) A property name of the object instance.
      int         position   (I) -- < (I) The position of the specified property in an array or list.
                                          The first position is 0. For example, if the property is
                                          an array of size 3 and the third value in the array is to be modified,
                                          then position = 2.
    Output:
      tag_t* value (O) -- < (O) Actual value of the property at the specified index position.

    Asks value of a multi-valued (i.e., list or array) property at a particular index position.
    The property can be single-valued if position = 0.
    
    This function uses #PROP_ask_value_tag_at_msg if the property is multi-valued or 
    #PROP_ask_value_tag_msg if the property is single-valued and position = 0. 
    To customize the behavior of this function, register a method against one of these messages.
    '''
    value = ffi.new('tag_t*')
    prop_name = prop_name__py_str if prop_name__py_str != None else ffi.NULL
    __pytk__ifail__return__ = itklib.AOM_ask_value_tag_at(object_tag, prop_name, position, value)
    iFail2Exception(__pytk__ifail__return__)
    return value[0]
def AOM_ask_value_tags(object_tag, prop_name__py_str):
    '''
    Input:
      tag_t       object_tag (I) -- < (I) Unique identifier (tag) of the object instance.
      const char* prop_name  (I) -- < (I) A property name of the object instance.
    Output:
      tag_t** values (OL(num)F) -- < (OF) num Actual values of the property. This must be a list or array of
                                          constant chars. If the property is an array, the number of values
                                          passed in must equal the size of the array.

    Asks one or more values of a property. The property can be single-valued or multi-valued (i.e., array or list).
    
    This function uses #PROP_ask_value_tags_msg if multi-valued and #PROP_ask_value_tag_msg if single-valued. 
    To customize the behavior of this function, register a method against one of these messages.
    '''
    num = ffi.new('int*')
    values = ffi.new('tag_t**')
    prop_name = prop_name__py_str if prop_name__py_str != None else ffi.NULL
    __pytk__ifail__return__ = itklib.AOM_ask_value_tags(object_tag, prop_name, num, values)
    iFail2Exception(__pytk__ifail__return__)
    values__py_list = [values[0][pytk_i] for pytk_i in xrange(num[0])]
    itklib.MEM_free(values[0])
    return values__py_list