array $robots )
Filters the directives to be included in the ‘robots’ meta tag.
The meta tag will only be included as necessary.
Associative array of directives. Every key must be the name of the directive, and the corresponding value must either be a string to provide as value for the directive or a boolean
trueif it is a boolean directive, i.e. without a value.
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$robots = apply_filters( 'wp_robots', array() );