retain method
Retain operations have a Number retain
key defined representing the number of characters to keep (other libraries might use the name keep or skip).
An optional attributes
key can be defined with an Object to describe formatting changes to the character range.
A value of null
in the attributes
Object represents removal of that key.
Note: It is not necessary to retain the last characters of a document as this is implied.
Implementation
void retain(int length, {Attributes? attributes}) =>
add(TextRetain(length, attributes: attributes));