Added a check to see if the method (attribute) is callable in the tag object before calling it
Added a check to see if the method (attribute) is callable in the tag object before calling it


Former-commit-id: a97931e34484309141f739c120421b885d7281d1
Former-commit-id: f657ac8907d4328b60432524955b89bea289a7e1
mainio/concrete5,deek87/concrete5,concrete5/concrete5,acliss19xx/concrete5,mlocati/concrete5,MrKarlDilkington/concrete5,rikzuiderlicht/concrete5,mlocati/concrete5,haeflimi/concrete5,triplei/concrete5-8,olsgreen/concrete5,hissy/concrete5,jaromirdalecky/concrete5,MrKarlDilkington/concrete5,rikzuiderlicht/concrete5,deek87/concrete5,KorvinSzanto/concrete5,biplobice/concrete5,acliss19xx/concrete5,triplei/concrete5-8,deek87/concrete5,KorvinSzanto/concrete5,concrete5/concrete5,concrete5/concrete5,haeflimi/concrete5,mlocati/concrete5,a3020/concrete5,jaromirdalecky/concrete5,biplobice/concrete5,jaromirdalecky/concrete5,haeflimi/concrete5,acliss19xx/concrete5,mainio/concrete5,hissy/concrete5,jaromirdalecky/concrete5,olsgreen/concrete5,olsgreen/concrete5,hissy/concrete5,rikzuiderlicht/concrete5,concrete5/concrete5,biplobice/concrete5,MrKarlDilkington/concrete5,biplobice/concrete5,hissy/concrete5,triplei/concrete5-8,mlocati/concrete5,KorvinSzanto/concrete5,a3020/concrete5,haeflimi/concrete5,deek87/concrete5,mainio/concrete5