toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
return 'SPResponsiveValue('
'base: $base, '
'sm: $sm, '
'md: $md, '
'lg: $lg, '
'xl: $xl, '
'xxl: $xxl'
')';
}