question: public static @ CheckForNull @ SlashedClassName String fromFieldSignature ( String signature ) { if ( signature . charAt ( 0 ) != 'L' ) { return null ; } return signature . substring ( 1 , signature . length ( ) - 1 ) ; }
target:  Converts from signature to slashed class name (e.g., from Ljava/lang/String; to java/lang/String). Returns null if it is the signature for an array or primitive type.